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      1 /*
      2  * Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef HTMLVideoElement_h
     27 #define HTMLVideoElement_h
     28 
     29 #include "core/html/HTMLMediaElement.h"
     30 #include "core/html/canvas/CanvasImageSource.h"
     31 #include "platform/graphics/GraphicsTypes3D.h"
     32 
     33 namespace blink {
     34 class WebGraphicsContext3D;
     35 }
     36 
     37 namespace blink {
     38 
     39 class ExceptionState;
     40 class HTMLImageLoader;
     41 class GraphicsContext;
     42 
     43 // GL types as defined in OpenGL ES 2.0 header file gl2.h from khronos.org.
     44 // That header cannot be included directly due to a conflict with NPAPI headers.
     45 // See crbug.com/328085.
     46 typedef unsigned GLenum;
     47 typedef int GC3Dint;
     48 
     49 class HTMLVideoElement FINAL : public HTMLMediaElement, public CanvasImageSource {
     50     DEFINE_WRAPPERTYPEINFO();
     51 public:
     52     static PassRefPtrWillBeRawPtr<HTMLVideoElement> create(Document&);
     53     virtual void trace(Visitor*) OVERRIDE;
     54 
     55     unsigned videoWidth() const;
     56     unsigned videoHeight() const;
     57 
     58     // Fullscreen
     59     void webkitEnterFullscreen(ExceptionState&);
     60     void webkitExitFullscreen();
     61     bool webkitSupportsFullscreen();
     62     bool webkitDisplayingFullscreen();
     63 
     64     // Statistics
     65     unsigned webkitDecodedFrameCount() const;
     66     unsigned webkitDroppedFrameCount() const;
     67 
     68     // Used by canvas to gain raw pixel access
     69     void paintCurrentFrameInContext(GraphicsContext*, const IntRect&) const;
     70 
     71     // Used by WebGL to do GPU-GPU textures copy if possible.
     72     // See more details at MediaPlayer::copyVideoTextureToPlatformTexture() defined in Source/WebCore/platform/graphics/MediaPlayer.h.
     73     bool copyVideoTextureToPlatformTexture(WebGraphicsContext3D*, Platform3DObject texture, GC3Dint level, GLenum internalFormat, GLenum type, bool premultiplyAlpha, bool flipY);
     74 
     75     bool shouldDisplayPosterImage() const { return displayMode() == Poster || displayMode() == PosterWaitingForVideo; }
     76 
     77     KURL posterImageURL() const;
     78 
     79     // FIXME: Remove this when WebMediaPlayerClientImpl::loadInternal does not depend on it.
     80     virtual KURL mediaPlayerPosterURL() OVERRIDE;
     81 
     82     // CanvasImageSource implementation
     83     virtual PassRefPtr<Image> getSourceImageForCanvas(SourceImageMode, SourceImageStatus*) const OVERRIDE;
     84     virtual bool isVideoElement() const OVERRIDE { return true; }
     85     virtual bool wouldTaintOrigin(SecurityOrigin*) const OVERRIDE;
     86     virtual FloatSize sourceSize() const OVERRIDE;
     87     virtual const KURL& sourceURL() const OVERRIDE { return currentSrc(); }
     88 
     89     virtual bool isHTMLVideoElement() const OVERRIDE { return true; }
     90 
     91 private:
     92     HTMLVideoElement(Document&);
     93 
     94     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
     95     virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
     96     virtual void attach(const AttachContext& = AttachContext()) OVERRIDE;
     97     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     98     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     99     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
    100     virtual bool hasVideo() const OVERRIDE { return webMediaPlayer() && webMediaPlayer()->hasVideo(); }
    101     bool supportsFullscreen() const;
    102     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
    103     virtual const AtomicString imageSourceURL() const OVERRIDE;
    104 
    105     bool hasAvailableVideoFrame() const;
    106     virtual void updateDisplayState() OVERRIDE;
    107     virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
    108     virtual void setDisplayMode(DisplayMode) OVERRIDE;
    109 
    110     OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
    111 
    112     AtomicString m_defaultPosterURL;
    113 };
    114 
    115 } // namespace blink
    116 
    117 #endif // HTMLVideoElement_h
    118